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Class: ActiveRecord::ConnectionAdapters::MySQL::Column

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::ActiveRecord::ConnectionAdapters::Column
Instance Chain:
self, ::ActiveRecord::ConnectionAdapters::Column, ::ActiveRecord::ConnectionAdapters::Deduplicable
Inherits: ActiveRecord::ConnectionAdapters::Column
Defined in: activerecord/lib/active_record/connection_adapters/mysql/column.rb

Class Method Summary

::ActiveRecord::ConnectionAdapters::Column - Inherited

.new

Instantiates a new column in the table.

Instance Attribute Summary

::ActiveRecord::ConnectionAdapters::Column - Inherited

#limit, #precision, #scale, #sql_type, #type,
#auto_incremented_by_db?

whether the column is auto-populated by the database using a sequence.
#auto_populated?, #bigint?, #collation, #comment, #default, #default_function, #has_default?, #name, #null, #sql_type_metadata, #virtual?

Instance Method Summary

::ActiveRecord::ConnectionAdapters::Column - Inherited

#==, #encode_with,
#eql?

Alias for Column#==.
#hash,
#human_name

Returns the human name of the column name.
#init_with, #deduplicated

::ActiveRecord::ConnectionAdapters::Deduplicable - Included

#-@

Alias for Deduplicable#deduplicate.
#deduplicate, #deduplicated

Constructor Details

This class inherits a constructor from ActiveRecord::ConnectionAdapters::Column

Instance Attribute Details

#auto_increment? ⇒ Boolean (readonly) Also known as: #auto_incremented_by_db?

[ GitHub ] 

  


# File 'activerecord/lib/active_record/connection_adapters/mysql/column.rb', line 17



def auto_increment?
  extra == "auto_increment"
end


  








  

    #auto_incremented_by_db?   (readonly)
  



  

    

Alias for #auto_increment?.


  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/mysql/column.rb', line 20



alias_method :auto_incremented_by_db?, :auto_increment?


  








  

    #case_sensitive?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/mysql/column.rb', line 13



def case_sensitive?
  collation && !collation.end_with?("_ci")
end


  








  

    #extra   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/mysql/column.rb', line 7



delegate :extra, to: :sql_type_metadata, allow_nil: true


  








  

    #unsigned?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/mysql/column.rb', line 9



def unsigned?
  /\bunsigned(?: zerofill)?\z/.match?(sql_type)
end


  








  

    #virtual?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/mysql/column.rb', line 22



def virtual?
  /\b(?:VIRTUAL|STORED|PERSISTENT)\b/.match?(extra)
end